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| author | Christian Brauner <brauner@kernel.org> | 2026-09-01 14:14:47 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2026-09-23 09:19:51 +0200 |
| commit | eb50cbe14ff97ea533708bfc40a74df7af380e5f (patch) | |
| tree | 04255d6bd0627986926ea9a95d044ac9a12bd23b /Documentation/filesystems | |
| parent | 6bd532e338759278b5cc1e912cf9b67a997e658c (diff) | |
| download | linux-next-eb50cbe14ff97ea533708bfc40a74df7af380e5f.tar.gz linux-next-eb50cbe14ff97ea533708bfc40a74df7af380e5f.zip | |
fs: port ->create() to pass const mnt_idmap
Convert to const struct mnt_idmap.
A mount's idmapping is immutable. The only thing that is allowed to be
modified afterwards is the reference count and that is hidden behind
mnt_idmap_get() and mnt_idmap_put(). Everything else only ever reads
from the idmapping. This is the same model that struct cred uses and the
idmapping is also rather sensitive.
So make the idmap argument const wherever we can. The conversion is done
from the bottom up so callers can continue to pass a non-const pointer
to a const parameter until the conversion is finished.
No functional changes.
Link: https://patch.msgid.link/20260901-work-idmap-const-v1-22-54ccd48e100b@kernel.org
Reviewed-by: Jan Kara <jack@suse.cz>
Reviewed-by: Seth Forshee <sforshee@kernel.org>
Signed-off-by: Christian Brauner (Amutable) <brauner@kernel.org>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/locking.rst | 2 | ||||
| -rw-r--r-- | Documentation/filesystems/vfs.rst | 2 |
2 files changed, 2 insertions, 2 deletions
diff --git a/Documentation/filesystems/locking.rst b/Documentation/filesystems/locking.rst index 856b9cc88c76..864768700eda 100644 --- a/Documentation/filesystems/locking.rst +++ b/Documentation/filesystems/locking.rst @@ -61,7 +61,7 @@ inode_operations prototypes:: - int (*create) (struct mnt_idmap *, struct inode *,struct dentry *,umode_t); + int (*create) (const struct mnt_idmap *, struct inode *,struct dentry *,umode_t); struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int); int (*link) (struct dentry *,struct inode *,struct dentry *); int (*unlink) (struct inode *,struct dentry *); diff --git a/Documentation/filesystems/vfs.rst b/Documentation/filesystems/vfs.rst index 5a9203e98bb6..2ad273cfe547 100644 --- a/Documentation/filesystems/vfs.rst +++ b/Documentation/filesystems/vfs.rst @@ -415,7 +415,7 @@ As of kernel 2.6.22, the following members are defined: .. code-block:: c struct inode_operations { - int (*create) (struct mnt_idmap *, struct inode *,struct dentry *, umode_t); + int (*create) (const struct mnt_idmap *, struct inode *,struct dentry *, umode_t); struct dentry * (*lookup) (struct inode *,struct dentry *, unsigned int); int (*link) (struct dentry *,struct inode *,struct dentry *); int (*unlink) (struct inode *,struct dentry *); |